I am looking to buy a CDN plan to route the static requests coming into my forums via that. I will be transferring almost all of the images, smilies, css, javascript to the CDN and serve them from there. Unfortunately i am new to CDN's and am having trouble estimating my traffic bill using amazon s3(http://aws.amazon.com/s3/)? http://calculator.s3.amazonaws.com/calc5.html Exactly how do i get an estimate for the following fields? PUT/COPY/POST/LIST Requests: GET and Other Requests: Maxcdn has a simpler plan structure: http://www.maxcdn.com/compare.php. Although i am not clear on how good they are? Any help on how i go about selecting the CDN? For reference the sites am looking to host are in my siggy.